Volume 558, October 2013
|Number of page(s)||8|
|Section||Planets and planetary systems|
|Published online||14 October 2013|
Compact YORP formulation and stability analysis
Department of Mathematics, Tampere University of Technology, PO Box 553, 33101 Tampere, Finland
Received: 6 July 2013
Accepted: 3 September 2013
We present a concise analytical formulation of the YORP effect, with exact formulae for torques on convex bodies and motion-averaged components applicable to any shapes. We analyze the main features of the secular torques for zero and nonzero thermal inertia that are function series dependent on only a few coefficients. Using these, we investigate the stability of the YORP effect against shape perturbations with analytical and numerical estimates. We define a quantity describing the YORP capacity of any shape, and estimate YORP stability with it.
Key words: methods: analytical / methods: numerical / radiation mechanisms: thermal / minor planets, asteroids: general / minor planets, asteroids: individual: (1862) Apollo / minor planets, asteroids: individual: (3103) Eger
© ESO, 2013
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